Hi there 
I’m Roni, I’m a Product Manager from the Editor X team.
Amongst the parts of Editor X I’m in charge of are layout tools such as Layouter, Repeater, Stack, Containers and Sections, and the Sizing and Positioning of elements using Docking, Margins, etc. as done from the stage or from the Inspector.
I’m very excited for the opportunities this Forum will bring about 
Feel free to ask me anything. I’d be happy to help!